How should sequence identifiers be presented in drawing figures?

This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice.

According to MPEP 2422.02, sequence identifiers in drawing figures should be presented as follows:

• The sequence identifier must be included in the drawing where the sequence is presented.
• The sequence identifier should appear next to the sequence, preferably within the figure.
• The identifier should be placed in parentheses.
• Example format: (SEQ ID NO: X)

The MPEP states: “Where a sequence is presented in a drawing, the sequence must still be included in the sequence listing if the sequence falls within the definition set forth in 37 CFR 1.821(a), and the sequence identifier (“SEQ ID NO:”) must be used, either in the drawing or in the Brief Description of the Drawings.“